For convenience in regulating orders for sowing, the following table will show at a glance the approximate and relative number of seeds of the various commonly cultivated forest trees contained in 1 lb. weight:— Abies nobilis about 19,400 Abies nordmanniana ” 10,000 Ash ” 6,800 Beech ” 2,700 Douglas Fir ” 95,200 Horse Chestnut ” 36 Hornbeam ” 9,968 Larch ” 65,000 Lawson’s Cypress ” 131,400 Lebanon Cedar ” 10,800 Norway Maple ” 4,600 Oak ” 100 Pinus Austriaca ” 35,000 Pinus Laricio ” 43,000 Pinus Pinaster ” 12,000 Pinus Sylvestris ” 75,000 Spruce ” 64,500 Silver Fir ” 14,960 Sycamore ” 4,624 Walnut ” 36 These figures must only be taken as approximate, the seed of various trees of the same species seeming to vary in the number to the pound in a marked degree. The results of careful analysis of one or two kinds may be cited as examples. In one case the number of seeds in 1 lb. weight of Scotch Fir was 69,600, while in another it had increased to 90,600; and in the Larch the numbers were 33,900 and 68,000. These differences are, however, mainly due to the individual seeds being weightier in one case than in another, probably owing to the age and health of the tree from which they were collected, the situation and exposure to which it was subjected, etc. However, for all nursery purposes the above figures may be accepted as a fair standard. The time of collecting and the after-management of the different forest seeds vary so much that a brief description of those kinds most commonly planted will be found useful:— =Alder= seed should be gathered from the trees in October and sown in spring, say May. =Ash= seeds are ripe in October, when they should be collected and kept in moist sand during the winter, and sown in March. =Austrian=, =Corsican= and =Weymouth Pine= seeds are treated in every respect like those of Scotch Fir, varying the kiln heat according to the looseness of the cone-bracts. =Beech= seeds are collected in October and November, placed in sand, and sown in April. The young plants are readily affected by frost, and the seed should, therefore, not be sown earlier than the time mentioned. =Birch= seed must be collected from the trees just before it becomes ripe in August, otherwise it is scattered broadcast and lost for cultivation. March is the time for sowing. =Cupressus Lawsoniana= seed is usually ready for collecting in October, but should not be sown before the first week in April.